Plain_Dude_Sleeping_Alone :
If I have a vector v1(-4,3)
where it starts from v0(0,0)
. How do I find out the direction in said, in angle or radian representation ?. The magnitude of the vector is sqrt((-4-0)^2 + (3-0)^2)
which is 5
. If the direction is (|-4/5|, |3/5| )
which is (0.8, 0.6)
then how do I convert this in an angle representation? Will this be clockwise, counter-clockwise?
duffymo :
The fastest way to answer this question is to experiment:
public class TangentDemo {
public static void main(String[] args) {
double x = -4.0;
double y = 3.0;
double radians = Math.atan2(y, x);
System.out.println(String.format("Angle: %10.6f radians %10.6f degrees", radians, Math.toDegrees(radians)));
}
}
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